package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.pojo.Employee;
import com.itheima.reggie.service.EmployeeService;
import com.itheima.reggie.util.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;

@Slf4j
@RequestMapping("/employee")
@RestController
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登陆
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){

        //1.将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2.根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> employeeLambdaQueryWrapper = new LambdaQueryWrapper<>();
        employeeLambdaQueryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(employeeLambdaQueryWrapper);

        //3.如果没有查到则返回登陆失败结果
        if(emp == null){
            return R.error("用户名不存在");
        }

        //4.密码比对，如果不一致则返回登陆失败结果
        if (!emp.getPassword().equals(password)){
            return R.error("密码错误");
        }

        //5.查看员工状态，如果为禁用状态，则返回员工状态已禁用结果
        if(emp.getStatus() == 0){
            return R.error("账号已禁用");
        }

        //6.登陆成功，将员工id存入session并返回登录结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //清除session中保存的当前员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功 ");
    }

    /**
     * 新增员工
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工，员工信息：{}",employee.toString());
        //设置初始密码123456,需要进行md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());

        //Long employeeId = (Long) request.getSession().getAttribute("employee");
        //employee.setCreateUser(employeeId);
        //employee.setUpdateUser(employeeId);

        employeeService.save(employee);
        return R.success("新增员工成功");
    }

    /**
     * 员工信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
        log.info("page = {},pageSize = {},name = {}",page,pageSize,name);
        //构造分页构造器
        Page<Employee> pageInfo = new Page(page,pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        //添加过滤条件
        lambdaQueryWrapper.like(!StringUtils.isEmpty(name),Employee::getUsername,name);
        //添加排序条件
        lambdaQueryWrapper.orderByDesc(Employee::getUpdateTime);
        //执行查询
        employeeService.page(pageInfo, lambdaQueryWrapper);

        return R.success(pageInfo);
    }

    /**
     * 根据id修改员工
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody Employee employee){
        log.info(employee.toString());

        //long id = Thread.currentThread().getId();
        //log.info("线程id为：{}",id);

        //Long empId = (Long) request.getSession().getAttribute("employee");
        //employee.setUpdateTime(LocalDateTime.now());
        //employee.setUpdateUser(empId);
        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }

    /**
     * 根据id查询员工信息并回显
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据id查询员工信息");
        Employee employee = employeeService.getById(id);
        if(employee != null) {
            return R.success(employee);
        }
        return R.error("该员工不存在");
    }
}
